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FOR UNIVERSITIES

ProductsSimuLED (LED&LD) > For Universities

Why we recommend using SimuLED in education

SimuLED software package allows one to simulate and visualize processes inside LEDs and LDs from internal quantum efficiency of heterostructure to light extraction form the die. It is fast and easy to learn. We recommend it as an educational tool for under- and postgraduate students, because using SimuLED students can:

  • Get results of numerous experiments when time is pressing
  • Learn to integrate computations into their work
  • Supplement their thesis with computation results
  • Get a feel of how stuff works
We have included into the package a number of pre-set examples, that can serve as a convenient basis for the course.

These example are accompanied by project files, that allow license holders to reproduce the computations. Wa are working on more examples. Let us know which examples would be particularly useful for you and we will consider adding them (mark.ramm@str-soft.com).

Examples supplied with SiLENSe module:

Many of the examples and case studies listed below can be downloaded from http://downloads.str-soft.com/

  • Example 1 Blue SQW LED heterostructure
  • Example 2 Blue MQW LED heterostructure
  • Example 3 UV Laser Diode on sapphire substrate
  • Example 4 AlGaAs Laser Diode
  • Example 5 Hybrid II-O/III-N LED (ZnO-based LED)
  • Example 6 Polar/Semipolar/Nonpolar Heterostructures

Examples and case studies for SpeCLED & RATRO:

Many of the examples and case studies listed below can be downloaded from http://downloads.str-soft.com/

  • Example 1 - Coupled computation of current spreading and heat transfer in a planar die 1
  • Example 2 - Isothermal computation of current spreading in a planar die 2
  • Example 3 - Isothermal computation of current spreading in a planar die 2 with a spreading layer
  • Example 4 - Coupled computation of current spreading and heat transfer in a planar die 2
  • Example 5 - Coupled computation of current spreading and heat transfer in a planar die 2 with a spreading layer
  • Example 6 - Coupled computation of current spreading and heat transfer in a vertical die 1 without a blocking layer
  • Example 7 - Coupled computation of current spreading and heat transfer in a vertical die 1 with a blocking layer

“Flight simulator” for future device engineers

SimuLED is also an excellent tool for training future device engineers:

  • Test the performance of your heterostructure
  • Design contact configuration and
  • See how LED or LD will work
One can do all of the above fast and without any waist of materials or equipment amortization.

SimuLED can be used for research

While here we mostly promote SimuLED for education, it can also be used to conduct research. It is currently used by a number of research university groups. It is also used in R&D departments to generate intellectual property for further industrial use, as it allows to try out design ideas, to test proposed heterostructures, to see how ones ideas would work when implemented.

Examples of research work conducted using SimuLED:

Effect of electron blocking layer on efficiency droop in InGaN/GaN multiple quantum well light-emitting diodes.
Appl. Phys. Lett. 94, 231123 2009
Sang-Heon Han,1,2 Dong-Yul Lee,2 Sang-Jun Lee,1 Chu-Young Cho,1 Min-Ki Kwon,1
S. P. Lee,1 D. Y. Noh,1 Dong-Joon Kim,2 Yong Chun Kim,2 and Seong-Ju Park1
1Department of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 500-712, Republic of Korea
2Samsung Electro-Mechanics, Suwon 443-743, Republic of Korea

The effect of silicon doping in the selected barrier on the electroluminescence of InGaN/GaN multiquantum well light emitting diode.
Appl. Phys. Lett. 90, 031102 (2007)
Eun-Hyun Park, David Nicol Hun Kang, and Ian T. Ferguson School of Electrical and Computer Engineering, 777 Atlantic Drive, Georgia Institute of Technology, Atlanta, Georgia 30332-0250
Soo-Kun Jeon Joong-Seo Park and Tae-Kyung Yoo EpiValley, Co., Ltd., 51-2 Neungpyeong-Ri, Opo-Eup, Kwangju City, Kyunggi-Do, Korea

Theoretical study of current overflow in GaN based light emitters with superlattice cladding layers.
J. Appl. Phys. 100, 016103 (2006)
S. P. Lepkowski and S. Krukowski Unipress, Institute of High Pressure Physics, Polish Academy of Sciences, ulica Soko owska 29, 01-142 Warszawa, Poland

Design and simulation of ZnO-based light-emitting diode structures.
J. Vac. Sci. Technol. B Volume 23 (6) 2005, p. 2504
Sang Youn Han, Hyucksoo Yang, D. P. Norton, S. J. Pearton, F. Ren, A. Osinsky, J. W. Dong, B. Hertog, and P. P. Chow

Also, see the presentation by professor Hiroshi Amano (Meijo University) at 28th Electronic Materials Symposium: 2009.07.08 28th EMS Amano.pdf

One more example: at ICNS-2007 two research groups reported on the role of the Auger recombination in IQE droop. STR predicted it theoretically using SimuLED and Lumileds showed it experimentally.

Who is already using SimuLED for research and education

Central Electronics Engineering Research Institute, Pilani, India.
Technische Universitat Berlin, Institut fur Festkorperphysik, Germany
Fraunhofer Institut Angewandte Festkorperphysik, Freiburg, Germany
Tokyo Institute of Technology, Japan
Industrial Technology Research Institute of Taiwan, Taiwan
School of Electrical and Computer Engineering, Georgia Institute of Technology, GA, USA
Electrical & Engineering Department, University of Delaware, DE, USA
College of Optics and Photonics, University of Central Florida, FL, USA
Institute of High Pressure Physics), Polish Academy of Sciences, Warsaw, Poland 
Department of Materials Science and Engineering, Meijo University, Nagoya, Japan
Department of Electrical Engineering, The National Central University, Jhongli, Taiwan
Advanced Optoelectronic Devices Laboratory, National Taiwan University
Department of Applied Mathematics and Physics, State University, Vladimir, Russia
Interdisplinary Graduate School of Science and Engineering, Tokyo Institute of Technology
Semiconductor Device Laboratory, Yamaguchi University, Ube, Japan
Korea Polytechnic University, Siheung City, Korea
Gwangju Institute of Science and Technology, Gwangju, Korea
Korea University, Advanced Semiconductor Laboratory, School of Electrical Engineering

We know needs and wants of universities firsthand

STR works with educational and research institutions on a daily basis. Several of our team members teach at universities. We also support several local universities and research institutions by providing grounds and software for their under- and post-graduate students to conduct research in the field of numerical simulation. Based on this work, numerous masters and several doctorate works have been successfully completed.

In some cases, SimuLED can be customized to meet the needs of your particular research or educational program.

Finally, universities get substantial discounts on both single and department license.


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